<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <script>
      var obj = { name: "张三", age: 23, height: "178cm" };
      console.log(obj);
      //   获取对象里的值
      var res = obj.age;
      console.log(res);
      var a = obj["name"];
      console.log(a);
      //   设置对象里的值
      obj.name = "李四";
      console.log(obj);
      obj["height"] = "180cm";
      console.log(obj);
    </script>
  </body>
</html>
